I suspect the problem is an incomplete understanding of how IMAP works or inaccurate wording on someone's part. You might find this article from What is my IP or this Wikipedia article informative.

Last edited by joemikeb; 11/11/18 01:05 PM. Reason: add URLs

"All you've got to do is own up to your ignorance
honestly, and you'll find people who are eager to
fill your head with information"
--Walt Disney